altered carbon
altered carbon-
Increases in atmospheric nitrogen deposition since the 20th century 70 years have altered carbon cycling of forest ecosystems by affecting productivity and biomass accumulation in terrestrial ecosystems .
自20世纪70年代以来，森林生态系统碳循环受到了全球氮沉降的深刻影响，因为氮沉降改变了陆地生态系统的生产力和生物量积累。
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The results revealed that the respiration activities by fishes significantly altered the concentration and carbon stable isotope value of dissolved inorganic carbon ( DIC ) .
结果表明，鱼类呼吸代谢产生的碳源对水体中溶解态无机碳的浓度和碳稳定同位素值均有较大的影响。